Not sure why, when, or how to winterize an RV? Winterizing your RV is a critical task that protects it from freezing temperatures and costly damage. Getting your motorhome ready for winter keeps it in great shape. This way, it will be ready to go when spring comes.
Keep your owner’s manual handy if you’re not familiar with your RV systems. Then, let’s get started.
Preparation Before Winterizing
Getting ready to winterize your RV requires the right tools and timing. Proper preparation will make the process smoother and more effective.
Checklist of Essential Tools and Supplies
To start, gather these essential items:
- RV-specific, non-toxic antifreeze (usually 2–3 gallons).
- Air compressor (or compressed air) and blow-out plug.
- Wrenches, shop towels, and cleaning supplies.
- Protective RV cover and wheel chocks.
- Moisture absorbers or dehumidifiers.
Having these items ready ensures that you don’t need to stop mid-task to retrieve missing supplies.
When Is the Best Time to Winterize Your RV?
The best time to winterize your RV is before temperatures drop below freezing in your area. Monitor local weather forecasts and aim to complete the process in late fall. Waiting too long increases the risk of frozen pipes or tanks.
Step-by-Step Process to Winterize Your RV
Winterizing your RV involves several steps to drain water, protect pipes, and prepare your motorhome for cold temperatures.
More of a visual learner? Here’s a video on how to winterize your RV from our friends at RV Gear & Far:
Step 1: Drain the Water System
Start by removing all water from your RV’s plumbing system:
- Disconnect the city water hookup and turn off your water pump.
- Drain the fresh water tank as well as the black and gray water tanks. Use the black tank flush feature to clean the black tank thoroughly.
- Open all faucets (hot and cold) and the low-point drains to release water from the lines.
This step ensures that no water remains in your system, which could freeze and cause damage.
Step 2: Bypass the Water Heater
Bypassing the water heater prevents antifreeze from filling it unnecessarily. Locate the water heater bypass valve, usually near the water heater unit. Switch the valve to bypass mode. If your RV doesn’t have a bypass kit, consider installing one.
Alternatively, drain the water heater
Step 3: Blow Out Water Lines
Use an air compressor and blow-out plug to clear any remaining water:
- Attach the blow-out plug to the city water inlet and connect the air compressor.
- Adjust the compressor to 30–40 PSI to avoid damaging the system.
- Open all faucets, starting with the ones closest to the compressor, to push out water.
Blowing out the lines ensures that no water remains to freeze inside the pipes.
Step 4: Add Antifreeze to the System
Antifreeze protects your pipes and appliances from freezing temperatures:
- Insert the pump’s bypass hose into a bottle of antifreeze.
- Turn on the water pump to draw antifreeze into the system.
- Open each faucet one at a time (hot and cold) until antifreeze flows through.
- Flush the toilet and run external showers or other appliances until antifreeze appears.
Step 5: Protect Drain Traps
Pour antifreeze into all drains, including sinks, showers, and toilets. This step ensures that the P-traps remain protected from freezing.
Advanced Winterizing Tips for Motorhome Owners
These additional tips can help you make the most of your winterizing efforts and avoid common pitfalls.
DIY vs. Professional Winterizing
- Cost-effective and convenient if you follow the steps carefully.
- Requires some basic tools and knowledge of your RV’s systems.
Professional Winterizing
- Ideal for those who prefer a hassle-free experience.
- Costs $150–$300 on average but guarantees thorough service.
How to Winterize an RV Without Antifreeze
In some cases, you can winterize using air alone:
- Follow the steps to blow out water lines with an air compressor.
- If you store your RV in extremely cold climates, avoid this method because residual moisture can still freeze.
Common Mistakes to Avoid
- Forgetting to bypass the water heater can waste antifreeze and leave the system unprotected.
- Using automotive antifreeze instead of RV-safe antifreeze can damage your plumbing.
- Neglecting external water hookups and accessories like outside showers or ice makers.
Additional Storage and Maintenance Tips
Winterizing your RV isn’t just about protecting the water system. Proper storage and maintenance ensure that your RV stays in great shape throughout the off-season.
- Clean the Interior and Exterior: Vacuum and wipe down surfaces to remove crumbs and dirt. This prevents pests from entering your RV.
- Seal Exterior Seams: Inspect and seal any cracks or gaps in the exterior to block drafts and moisture.
- Protect Tires and Cover the RV: Inflate tires to the recommended pressure and use wheel chocks. Cover your RV with a breathable cover to protect it from snow and sunlight.
- Ventilate Storage Areas: Leave cabinet doors and the refrigerator slightly open to allow air circulation and prevent odors or mold.
Wrapping Up Your RV Winterization
By following these steps, you can confidently prepare your RV for winter storage. Taking the time to winterize prevents costly damage and ensures your motorhome is ready for new adventures when warmer weather returns.
Now that you have a better idea of how to winterize an RV, are you ready? Whether you tackle the process yourself or hire a professional, the key is to act before freezing temperatures arrive. With proper care, your RV will stay in top condition for years to come.